Transmission ob bjake band



Sept. 25,1923. 1,468,811 G. R. HOFFMAN TRANSMISSION OR BRAKE BAND Filed Jan. 16, 1922 I N vs/v 702 Tree/v5 Y Patented Sept. 25,1923; I

- UNETED STATE new .PATTENTYQFFICB GLENN n. HOFFMAN, or sr. Louis, rurssoufsr, .assrenozt, BY MESNE nssrsni-unnrs, TO remiss; BOHNE, INCL, OFST. LOUIS, arrssc'unr, A conronnrion OFMISSOUEI.

TRANSMISSiON on BR KE Benn.

Application filed January 16,1922. sem u 529 t r e it known that LGLENN R. lilo rMAN, a citizen, of the United States, res ding the citv oi Louis, State of Missouri, 'heveinven'ted a certain new and useful Iinpi'orenient in lransmissi'o-n or Brake Bands, of which the following is aspecili cation, 1 once being had to the acco'in pa n y ngura ung, iorming a part there llllS invention relates generally to automobiles and, more particularly, to certain new and useful improvement in automobile transmissioi'i and brake bands. 7 Considerable trouble, inconvenience, and expenseaccompany today, so far as i am aware, the removal and repair or replacement of worn orbroken transu ission bands oi especially automobilesoi a certain type;

t and it is the chief object of my present invention to provide a transmission or brake band especially adapted for use in connee-- tion with automobiles of the type mentioned which is of simple and eficient form and construction and whichis detachable or movable for repair or replacement with ease, convenience, and little expense. s

'With the above and other objects in view, my present invention resides in the novel features of form, construction, arrangement, and combination of parts hereinafter described and afterwards pointed out in the claims. j f

In the accompanying drawing-:-

Figure 1 is a, side elevational View oi a transmission or bralreband embodying my invention illustrated in connection with a transmissioncase' of an automobile oi present Well-known construction; y 1

Figure Q'is a perspective view oi"; the detachableear ofthe band;

I Figure 3 is a fragmental perspective view of the band; and 7 Figure 4- is a .iragmental view of the band partly in' side elevation and partly in usual removable lid or cover 2, 3the clutclr and slow speed ioot'pedal, 4- l the. be -rings for the pedal-actuated band-engaging rod 01 pin, and 5 onset the gear-drums.

"oi'fotherwisefixed upon the outer face or 'the band 6 and upon its other or opposite construction 0 proper is constructed of suitable pring steel and is of the usual splitsJ-accd, the band 5, however, being bent or doubled upon itself at one end to provide n." stop or abutment shoulder 8, as best seen in Figures 1 and 4. Disposed inspaced term with. its ends suitably yieldin: y

so -called tandem relation upon the outer ra'ce ot band Sand also in suitab'iyspaced relation from enlabutment 7, are upstanding headed studs or buttons 9, 9, and i 'ormud in band t} intermediate the shoulder?) and the buttons 9, is a preferably circular apertur'e or 'recesslOI l Adapted for co-operation with band 6, is what I designate as an ear 11, which includes a shank 12 arcuated longitudinally to conform to the normal curvature'of the described shouldered end of band 6, and a bifurcated or forked head 13' angularly up;

standing from the forward end ofghank i2,

as best seenin Figures 1, 2, and Within its length, the ear-shank 12 is termed or provided withso-called key or button-slots 14, i l, likewise in spaced tandem relation to correspondwith the spacing and location of the band buttons9 v9, and suitably 'adjacent its headed-end, the shank l is provided upon its under face with a short pin or stud luadapted, when the ear is in operative po-. sition upon band 6, to fit snugly within erture or recess 10. At its headed-end, the car ,11 is also undercut and shouldered, as at .16, for -accommodating and co-operation' with shouldered end 7 of band '6.

Disposed upon the inner face of band or ring 6, 1s the usual llning l7, and riveted 4:

end, is a second ear 18 likewise including a suitably longitudinally arcuated shank 19 and" an singularly-disposed bifurcated or forked head 20 substantially similar to and for co-operation with head 13 of ear 11.

In use or operation, and in assembling the ioo transmission, case-cover 2' is removed, and

a bandfi havinga fixed car 18' is disposed within the case 1'; and around the drum 5. Anear 11 is thendisposed upon the band 6 as seen in Figures 3 and l, buttons 9 fitting in and engaging the ear-shank '12 at the reduced portions of slots 14:, 14%, stud or pin 15fitting in and engaging the band6 at the aperture or recess 10, and head 13 snugly engaging at its end face and at its shoulder 16 with the end-abutment 7 and shoulder 8 01 hand or ring 6. And in so attaching the car 11 upon the band 6, it may be stated here that the shank 12 is disposed upon the band 6 with buttons 9 projecting through the larger portions or enlargements of the slots 1 1. The ear 11 is then moved -longi-- tudinally upon the band to dispose the buttons 9 within the reduced portions of the slots 14, and the ear then sprung into engageinent at its stud 15 and shoulder 16 with, respectively, the aperture or recess 10 usual band spring 21 is then disposed between thev ears 11 and 18 of the band, and the usual rod 22 projected through the bifurcations of the ear-heads 13 and '20 and through the spring 21 and through the bearings lfor contracting the band 6 to yieldingly engage the embraced drum 5 against the tension of the spring 21 on actuation of clutch pedal 3. 7

Should later the lining 17 become worn or the band 6 otherwise require repair or replacement, the case-cover 2 only is removed and spring 21 and rod 22 detached. Then, by means 01 a suitable tool, not shown, inserted between head 13 and abutment 7, the car 11 may be sprung out of engagement at its headed-end and at its stud 15 with abutment 7 and recess 10 and then moved longitudinally upon the band 6 to disengage the buttons 9 from the reduced portions of slots 14. The ear 11 may then .be readily removed from the band, and the band then as a whole endwise removed from around the drum 5.

My new band is simple in form and construction, with ease and convenience be included in the assembly or removed for repair or replacement, and greatly facilitates the inexpensive repair and correction of transmission troubles arising from worn or defective bands.

I am aware that changes in the form, construction, arrangement, and combination of the several parts of my new band may be made and substituted for those herein shown and described without departing from the nature and principle of my invention.

Having thus described my invention,-

what I claim and desire to secure by Let: ters Patent is:

1. An automobile transmission or brake band comprising, in combination, a split 1,4es,s11

ring of spring steel provided at an end with an ear-abutment, a series of spaced headedstuds upstanding from the ring adjacent said abutment, the ring being recessed intermediate said abutment and said studs, an ear having a rigid shank arcuated to conform to the curvature of and to removably fit upon the ring, said shank being provided with a series of stud-accommodating button-hole slots having their reduced portions disposed away from said ear, and a pin projecting from the under face of said shank for co-operation with said recess, the ear and ring being adapted for interlocking sprung engagement at said abutment for securing the ear in separable engagement at its slots and pin with'the studs and recess of the ring.

2. An automobile transmission or brake band comprising a split ring of spring steel provided at an end with an ear-abutment and an adjacent shoulder, a series of spaced headed-studs upstanding from the ring adjacent said shoulder, the ring being recessed intermediate said shoulder and said studs, an ear having a shank shouldered at an end, said shank being arcuated to conform to the curvature of and to removably fit upon the ring and being provided with a series of stiubaccommodating button-hole slots having their reduced portions disposed away from its said shouldered end, and a pin projecting from the under face of said shank :tor co-operation with said recess, the ear and ring being adapted "for interlocking sprung engagement at their shouldered ends for securing the ear in separable engagement at its slots and pin with the studs of the ring.

3. An automobile transmission or brake band comprising a split ring, of spring steel doubled upon itself at an end and thereby provided integrally with an ear-abutment and an adjacent shoulder, a series of spaced headed-studs upstanding from the ring, the ring being recessed intermediate said shoulder and said studs, an ear having a shank shouldered at an end, said shank being arouated to conform to the curvature of and to removably fit upon the ring and being pro- GLENN. R. HOFFMAN. 

